import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
Vue.use(VueRouter)

const routes = [
  //路由重定向,当用户访问主页面时,自动跳转到登录页面
  {
    path: '/',
    redirect: '/login'
  },
  {
    path: '/login',
    component: Login
  },
  {
    path: '/home',
    component: Home
  }
]

const router = new VueRouter({
  routes
})
router.beforeEach((to,from,next)=>{
  //to  将要访问的地址,如果时登录,直接放行
  if(to.path==='/login') return next()
  //如果不是,判断是否有token
  const tokenStr=window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})
export default router
